Submarine lighting fixture



Jan. 13, 1931. R. `BQL-:VERSON l SUBMARINE'QIGHTING FIXTURE Filed Jan. 31, l 1929 y 2 sheets-sheet 2' vsmev Y l i f f Patented Jan. 13, 1931 UNITED'STATES PATENT OFFICE ROY BLAIR EVERSON, OF CHICVAGO, ILLINOIS, v.ASSIGNOR TO THE EVERSONVFILTER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS Y f SUBMARINE LIGHTING/FIXTURE Application led January 31, 1929;" lSerial No. 336,377.`

This invention is intended primarily for use in association with swimming pools; or display fountains and the objects of the present invention are to provide a submerged lighting element whereby the sides, the bottom of the pool, and the swimmers bodies at all positions in the pool may be brightly lighted, and lighted without noticeable differences in the intensity of illumination.

Another object of this invention is `tojprovide a lighting element so designed as to* prevent the direct glare of the reflected light rays from interfering with the swimmers in the pool; and further to protect the eyes of the observers from a reflected glare from the surface of the water.

A further object is to provide a means for employing colored lights to tint the water of the pool or fountain to any desired color 2u or color effect.

A still further and important object is to provide means to eliminate the now present and objectionable feature of the glass breaking in the lighting element.

And a still further object of this invention is to provide a structure economical to manufacture and one that is easily installed in the j present designs of swimming pool and fountain construction, and one that is readily accessible for repairs and adjustmentl after installation.

Although this invention is primarily intended for the purpose above stated, it is obviously applicable for uses in connection with various other types of under water illumination where similar conditions are encountered. v

In the accompanying drawings Fig. 1 is a sectional View of the submarine lighting fixture assembled in the wall of a swimming pool; Fig. 2 is a front elevation partially in section of Fig. 1; and Fig. 3 is a sectional elevation of a modified construction of the details shown at Figure 1.

The numeral 1 represents thebody or wall of a swimming pool of standard construction7 preferably concrete, which is faced on the inner side with a finish of concrete 2, or this finih may be of tile as is also very commonly use My invention consists in providing anv annular flat ring .3, with integral anchors, being cast into the' wall of the pool at the time the wall is poured. To ythis ring 3, is fitted a jacketed container comprising an innerwall 4, and an outer wall 5; which walls are flanged at theirl respective ends andare bolted or otherwise fastened to a rear plate 6, serving to seal the rear face 'of the water-jacket f so formed. The opposite flanged ends of the members 4 and 5 are also sealed with a ring 7, which is provided with apertures 8, which permit the water of the pool entering the f jacket .formed by the `members 4 and 5, and to circulate around the member 4so that the Coldwater coming in at the bottom will circulate upwardsand out the top aperture 8a, i

as willvbe hereinafter described.. The rear plate 6, isv provided with ra plurality of set l screws 9, and locknuts 10, whichare tapped through the plate 6, and have bearing against the rear facelof the wall 1, so 'that when the set screw is tightened against the rear face of the wall, the plate 7, is tightened againstthe outer or frontv face of the ring 3, .forming a water tight seal. f The water jacketed` container comprising the walls 4 and 5 with the rear and front I plates 6 and 7, is adapted to carry a lighting element by means of a bracketll, being secured to the plate 6. This lighting element for sakeof description'is shown on the drawings andcomprises a standard light socketvv lug 24, a second lens 25, preferably corru#l gated, frosted, or clear and which is held in place by means of the outer ring 7, with an integral lip 7 a( bearing against the face "of the lens 25, and making a watertight connection, either by means of a washer or waterproof cement 26, interposed betweenthe lip 7a, and the lens 25, as shown in Fig. 1 in the drawing. This glass may be carried by a separate element such as a. ring 30, as shown at Fig. 3, of the drawings.

On the vwater side or front wall of the lighting unit is the lens 25, which as above stated is preferably of corrugated glass which tends to spread the light rays laterally, whereas the inner lens'22, is adapted to either filter or color the light, and to direct the light rays from the lighting element itself in the form of a pencil or sheet upon the surface of the lens 25. The axis of the lamp and reflector, and preferably the inner plate 22, is so adjusted as to point downwardly to a location approximating the junction othe opposite side wall of the pool with the bottom of the n pool. i rl"he mounting of the lamp socket is adjustable as before described, so that each unit of the many comprising a complete installation for a pool, while 0f identical con.

struction, may be adjusted after installation to ive the correct light distribution relative to 1ts particular location in the pool.

The front lens 25, being in `Contact with the water will vary in temperature through a limited temperature range, although considerable heat will be generated by the lamp 15, in its operation. This temperature change ordinarily would be characterized by considerable expansion and contraction of the lens 25, and to eliminate thisI have provided the water jacket which permits the water of the pool t circulate around the support of the lens and thus carry off the heat generated by the light and transmit it to the` y 2. In a submarine lighting fixture, the com-ly bination of an annular ring, an annular water-jacketed container mounted therein, a lighting element adj ustably supported therefrom, a lens supported transversely of andby the walls of said water-jacketed container,V

means for sealing said lens in place, a light filter interposed between said lighting element and said lens, means for securing said light filter in a. plane at an angle to said lens, and means for sealing said container against said first mentioned annular ring.`

ROY BLAIR EVERSON.. 

